NOYB wrote:

I just lost a nice Fortress anchor yesterday because I don't think I had
enough chain on the line while trying to use an Anchor buoy retrieval
system.

Good Lord! NOYB, you own a boat? :-)

The Rulers of Thumb say the minimum amount of chain should be at least equal to
the LOA of your boat.

Step up. That "extra" chain won't cost anywhere nearly as much as the Fortress
you just lost.